Device for preparing stencil-sheets.



E. W. Hl-LL.

DEVICE FOR PREPARING STENCIL SHEETS.

APPLICATION FILED ocT. 12. 1915.

Lmf., l Patented Feb. 6,1917'.l

f@ i* mmmNMIHHHNWM 'um um un' Hallum um -mu um "Mw um um um 'nml-mu nur x r um .um wunmu www um -s nm ||m, um `um K mum uur m umumfmn u' IP uml um um ATTORNEY EDWARD W. HILL, OF CHICAGO, ILLINOIS, ASSIGNOR TO A. B. DICK COMPANY, OF

CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

DEVICE FOR PREPARING STENCIL-SHEETS.

Specification of Letters Intent.

Patented Feb. 6, 1917.

Application led October 12, 1915. Serial No. 55,365.

ful Improvements in Devices for Preparing Stencil-Sheets, of which the following is a specification.

My invention relates to devices for preparing stencil-sheets, and particularly to a scale sheet of transparent material having spaced rulings thereon which is used in conjunction with the stencil-sheet and preferably with other devices, as will be pointed out, in preparing the stencil.

My devices are particularly adapted for use when drawings or form matter are intended to be stenciled. In this case, the transparent sheet having scale rulings thereon, which I term a scale sheet, is placed upon a'glass or othertransparent plate through which light shines from a source placed beneath the plate. A stencil-sheet is placed above the scale sheet and held flatthereon, the scale rulings on the scale sheet being plainly visible through the stencilsheet because of the illumination furnished by the lamp or other source of light referred to. a transparent flexible sheet having a slightly rough/cned surface is interposed between-the scale sheet and the stencil-sheet, in which case the rulings on the scale sheet are visible through the stencil-sheet as before. Parallel or normal lines may now be ruled upon the stencil-sheet, with the aid of a T square or the like in accordance with the rulings on the scale sheet, and the rulings thus made may be used in the preparation of mechanical lor other drawings, or in the preparation of other'matter to be stenciled involving the use of a definite scale.

The scale sheet is preferably a thin sheet of Celluloid, bearing on one face thereof spaced lines variously placed and formed in various series, each series on a different scale, to aid in the prepara-tion of stencils for various purposes, as will be explained.

In order that a clearerfunderstandng of my invention 'may be had, attention is hereby directed to the accompanyingdrawings forming partlof this application and illustrating certain embodiments of my invention. 1

In the drawings, Figure-.1 represents-a Preferably, for reasons to'be explained..

perspective view, partly broken away, of a scale sheet, a flexible writing plate4 and a stencil-sheet laid upon a glass plate, and Fig. 2 is a plan view of the scale sheet.

Referring to the drawings, the scale sheet 1 is adapted to be laid upon the glass plate 2, which forms the horizontal upper surface of an apparatus in which an electric lamp,

or other source of illumination, may be` placed. T he lmcking-sheet 3 of the-stencil is represented in the drawings as laid above the scale sheet, the flexible writing plate 4 being represented as interposed between the backing-sheet 3 and the stencil-sheet 5, which is secured to the backing-sheet at its stub end (i, by adhesive in the well-known manner, the buttonholes 7 being provided at end 6, whereby the stencil may be secured to the drum of a stencil-duplicating machine in the well-known manner. If the backingsheet 3 is placed above the scale sheet as illustrated, it may be oiled or otherwise renl dered sufliciently transparent. It is not necessary, however, to position the backingsheet 3 above the scale sheet, as the backingsheet may be extended beyond the right handend of the. plate 2, shown in Fig. 1, out of the way, in which case the flexible writing plate 4 is laid directly upon the scale sheet with the stencil-sheet 5 positioned upon plate 4. i

The rulings upon scale sheet 1, as stated, are of various series and made to different scales. y. at right angles to the lower edge 7 of the sheet are illustrated as representing sixteenths of an inch, as well as the multiples of the same such as eighths and quarters of an inch. the left hand edge 9 of the sheet are represented as being dra-wn to the same scale, namely, sixteenths, eighths, etc., of an inch. The scale l0 parallel to the scale 6 represents tenths of an inch and the scale 11 at right angles thereto, adjacent the right hand edge 12 of the sheet is likewise drawn to Thus the series of rulings 6 drawn' The rulings 8 at right angles to The series of parallel-lines 16 adjacent the upper edge of the sheet are equally spaced and are intended for guiding lines whenautographic matter is to be stenciled.

Various uses for the scale sheet will be apparent, and include various specles of engineering and form work. For example, 1f

1t be desired to make cross-section or qua# drille ruled scale paper, as employed by engineers and in design work, figured either four, eight or ten lines to the inch, or the like, the stencil is prepared by placing thel stencil-sheet upon the scale sheet in the manner described and ruling the spaced lines thereon at right angles ,to each other, in alinement with the desired rulings of the scales 6 and 8, or 10 and 11, which are visible through the stencil-sheet. The stencil thus prepared may be used for the duplication of such quadriller paper in the usual manner. If stencils of music are to be made,

a sheet of light weight paper maybe posi- I ti'oned over" the scale sheet in place of the flexible writing plate 4 and the arrangement rof music staves 'best suited to the needs of theV user selected from the series of scale lines 13, 14 and 15, These lines may then be ruled on the sheet of paper with the. aid of a T square, wherebyalsheet of music rulings suited for permanent use is prepared which may be placed'beneath the writing plate 4 to. serve 'as guide lines whenever stencils are to be made of music in which the particular statt` line spacing corresponding to the rulings madeis the onerequired. For

makingstencils of plain hand writing, a set of lines can be drawn, as by a lead pencil, over 'the surface of scale sheet 1 in alinement with the lines 16, or such set of lines may be formed on any sheet of light weight paper which may be positioned-above the scale sheet,pand the sheet containing these guidelines placed upon the glass surface immediately lbeneath the flexible Writing 'plate 4 above which is positioned the stencilsheet upon\'which the hand Writing is to be formed. lAs another example of the use of A the scale sheet, a 'typewritten or otherwise formed stencil of the heading of a commercial form of greater or less elaborateness may b e positioned over the iex'ible writing plate and scale sheet, whereupon the varioushorizontal lines'and vertical column rulings required by the form can be `laid out directly on the stencil bythe use of the various scale divisions of the scale sheet which are visible through the stencil-sheet. The va- -rious rulings 0f the scale sheet should l'be vformed with a black or very dark ink, of a permanent character, upon one face of the Scale sheet. The rulings being slightly raised may slightly roughen this surface of the.. s c'alesheet and this surface should be placed next theglassv plate 2 with the desirable effect that the ruled lines tend to prevent the slipping of the scale sheet upon the surface of glass plate 2 when the sheet has been positioned. Likewise, the upper surface 0f the scale sheet being smooth will afford no roughness which might interfere with the preparation` of the stencil placed above the same.

The stencil-sheet with which the scale sheet is adapted to coact may be of any desired character. It is, however, preferably made in accordance with the disclosure of my application Serial No. 51,324, Methbd of and apparatus for preparing stencil-sheets for duplicating, filed September 18, 1915. As there described, the liexible writillg sheet is formed of eelluloid, or other transparent flexible material, having its upper surface, or both its upper and lower surfaces slightly roughened, as for instance, by pressing the same against a sand-blasted metal or glass. The roughened upper surface of this `writing plate 4 serves the purpose ,of holding a suicient quantity of moisture toimaintain the stencil-sheet in usable condition, while the stencil is being prepared, the stencilsheets of the character particularly referred 4to preferably being softenedxbythe application of moisturethereto when they are to be stencilized. .This writing plate being transparent does not detract from the visibility of the scalev lines of sheet 1, through the stencil sheet. The slight roughness of the writing plate 4 aids in preventin relative slipping between the lmembers vre erred to, namely, the scalesheet, the vriting plate and the stencil-sheet, when the'same are positioned in the manner described.

.fzsHaving now described my invention,.whatil I claim as new therein and desiref'to secure by Letters Patent is as follows v 1. In stencll-making apparatus, a sheet of i thin transparent .material having spaced ruhngs thereon 1n varlous series, different series bein formed to different scales, lines `of one serles extending inwardly lat right angles from a side edgeand an end edge off i the sheet, said'lines being adapted to act as guides for ruling scaled quadrilles on paper placed above the sheet; and other series of lines in the central portion of the sheet,.par` allel to an end edge, adapted to actas guides for ruling'staii" lines of music, lines of said series being arranged in groups of ve each,

the groups of one series being spaced apart different distances from the groups of another of said series, substantially as set forth.

2. In stencil-making apparatus, a sheet of thin transparent material having spaced rulingsthereon in various series, different series being formed to dii'erent scales, lines of one series extending inwardly at right angles from a side edge and an end edge of.

the sheet, said lines being adapted to act as guides for ruling scaled quadrilles on paper placed above the sheet; and other seriesof lines inthe central portion and adjacent the opposite side edge of the sheet, one of said series being composed of parallel lines arranged in groups of live each, said groups being separated b v distances di'erent from tliedistances between lines in a group, and another of said series having lines spaced equidistantly, substantially as set forth.

This specification signed and witnessed this 9th day of October, 1915.

' EDWARD W. HILL.

Witnesses:l

H. H. MULRAN, JOSEPH TEAL. 

